Window lock



March-.24, 1925. l

C. E. KNEEDLER y wINDow LocK Filset.. 15. 1924 Fim FIGS

FIG. X

Patented Mar. 24, 1925,

UNITED STATES PATENT OFFICE.

. WINDOW LOCK.

Application filed September 15, 1924. Serial No. 737,787.

To @ZZ 'w71 0m it may concern.'

Be it known that I, CLARENCE E. KNEED- LER, a citizen of the United States, residing at Chicago Heights, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in l/Vindow Locks, of which the following' is a specification.

This invention relates to improvements in window locks and its principal object is to providea simple, practical device adapted to lock the window sash in closed or partly closed position. A further object is to provide a. window lock that can be applied to the window sash without altering or disiiguring the same and that can be applied equally well to standard Windows or to windows of special size or shape, and that serve as anti-rattlers for the windows.

Simplicity in construction, cheapness of manufacture and efficiency in operation are objects attained by the invention.

lith the foregoing and other objects in view the invention consists in the combination and arrangement of parts to be hereinafter fully described, pointed out in the appended claim and illustrated. in the accompanying drawing which forms a part of this application and in which- Fig. l is a fragmentary view of a window illustrating the application of the invention.

Fig. 2 is a horizontal sectional view through the lock.

Figs. 3 and 4: are end views of the lock.

Fig. 5 is an inverted plan view of the lock.

Fig. 6 is a fragmentary sectional view of the lock.

Like reference characters denote corresponding parts throughout the several views.

The lock comprises a casing 1 substantialA ly oblong in shape and provided with perforate ears 2 whereby it is secured by pins 3 to the top rail 4 of the lower sash 5 to lock the side rail 6 of the upper sash in adjusted position. One end of the casing 1 is formed with a perforation to permit the cam face 8 of a dog 9 to project therethrough, a rubber shoe 10 being secured to said face 8 for contact with the window sash rail 6. The dog 9 is pivoted upon a pin 11 secured in the sides of the casing, said dog being pivotally secured also to a link 12 that is pivotally se` cured to the bifurcated end 13 of a plunger 14 that extends through one end of the casing and is provided with a knurled head 15 outside said casing.

A round shoulder 16 is formed upon the plunger adjacent its bifurcated end and serves as an abutment for one end of the coil spring 17 that encircles said plunger and abuts one end of the casing, the tend ency of the spring being to yieldingly pull the plunger into the casing and thereby project the cam face 8 out through the perforation 7 in said casing. The plunger is formeel with a recess to receive one end of a latch 18 pivotally secured by bolt 19 to one end of the casing whereby said plunger may be retained in inoperative position and the window unlocked, To lock the window the latch 18 is turned out of engagement with the recessed portion of the plunger 14. This permits the spring 17 to move the plunger into the casing and to move the dog causing the rubber shoe 10 to engage and lock the sash. The lower sash cannot be raised when the window lock is operative but it can be lowered from raised position as the latter movement will simply cause the cam face 8 to ride over the upper sash side rail without binding against it.

lhat is claimed is In a window lock, a casing formed with perforate ends, a cam pivoted in said casing at one of its ends for project-ion through the perforate portion thereof, a rubber shoe carried by said cam, a plunger disposed in the perforation in the opposite end of said casing, an annular shoulder formed upon said plunger, a link connecting said plunger and cam, a spring connecting said casing and annular shoulder, and a latch pivotally carried upon one end of said casing for releasable engagement with said plunger.

In testimony that I 4claim the foregoing as my own I have hereto aiiXed my signature in the presence of two subscribing witnesses.

CLARENCE E. KNEEDLER.

Witnesses: Y

LILLIAN E. KNEEDLER, Lona BAHLMAN. 

